The person who told me this, her friend does have a Long Arm and maybe the friend was talking about her Long Arm and not a regular sewing machine. I'm not going to pay over $100.00 for a bobbin winder. And as long as I have been sewing my machines have always ran good. Just wanted to know if anyone else heard of this. Thanks for the information. I may just buy one of the cheaper bobbin winders because it is a pain to stop and wind bobbins in the middle of a project.